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Finding the Fourth Proportional to 71,681.92, 107,522.76 and 19,091.56

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Solution

The fourth proportional to 71,681.92, 107,522.76 and 19,091.56 is: 28,637.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,681.92 : 107,522.76 = 19,091.56 : x
  2. Step 2: Convert to fraction form
    71,681.92/107,522.76 = 19,091.56/x
  3. Step 3: Cross multiply
    71,681.92x = 107,522.76 × 19,091.56
  4. Step 4: Simplify right side
    71,681.92x = 2,052,777,223.91
  5. Step 5: Solve for x
    x = 2,052,777,223.91/71,681.92
  6. Step 6: Final answer
    x = 28,637.31

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.